http://www.cnr.it/ontology/cnr/individuo/prodotto/ID196952
Phosphatidic acid as the biosynthetic precursor of the endocannabinoid 2-arachidonoylglycerol in intact mouse neuroblastoma cells stimulated with ionomycin (Articolo in rivista)
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- Phosphatidic acid as the biosynthetic precursor of the endocannabinoid 2-arachidonoylglycerol in intact mouse neuroblastoma cells stimulated with ionomycin (Articolo in rivista) (literal)
- Anno
- 1999-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1046/j.1471-4159.1999.0722113.x (literal)
- Alternative label
Bisogno T, Melck D, De Petrocellis L, Di Marzo V. (1999)
Phosphatidic acid as the biosynthetic precursor of the endocannabinoid 2-arachidonoylglycerol in intact mouse neuroblastoma cells stimulated with ionomycin
in Journal of neurochemistry; Lippincott Williams & Wilkins, Philadelphia (Stati Uniti d'America)
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- Bisogno T, Melck D, De Petrocellis L, Di Marzo V. (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1. CNR, Ist Chim Mol Interesse Biol, I-80072 Arco Felice, NA, Italy
2. CNR, Ist Cybernetics, I-80125 Arco Felice, Naples, Italy (literal)
- Titolo
- Phosphatidic acid as the biosynthetic precursor of the endocannabinoid 2-arachidonoylglycerol in intact mouse neuroblastoma cells stimulated with ionomycin (literal)
- Abstract
- In mouse neuroblastoma N18TG2 cells prelabeled with [H-3]arachidonic acid ([H-3]AA) the biosynthesis of 2-arachidonoylglycerol (2-AG) is induced by ionomycin in a fashion sensitive to an inhibitor of diacylglycerol (DAG) lipase, RHC 80267, but not to four different phospholipase C (PLC) blockers. Pulse experiments with [H-3]AA showed that ionomycin stimulation leads to the sequential formation of [H-3]phosphatidic acid ([H-3]PA), [H-3]DAG, and [H-3]2-AG. [H-3]2-AG biosynthesis in N18TG2 cells prelabeled with [H-3]AA was counteracted by propranolol and N-ethylmaleimide, two inhibitors of the Mg2+/Ca2+-dependent brain PA phosphohydrolase. Pretreatment of cells with exogenous phospholipase D (PLD) led to a strong potentiation of ionomycin-induced [H-3]2-AG formation. These data indicate that DAG precursors for 2-AG in intact N18TG2 cells are obtained from the hydrolysis of PA and not through the activation of PLC. The presence of 2% ethanol during ionomycin stimulation failed to elicit the synthesis of [H-3]phosphatidylethanol and did not counteract the formation of [H-3]PA, thus arguing against the activation of PLD by the Ca2+ ionophore, Selective inhibitors of secretory phospholipase A, and the acyl-CoA acylase inhibitor thimerosal significantly reduced [H-3]2-AG biosynthesis, The implications of these latter findings, and of the PA-dependent pathways of 2-AG formation described here, are discussed. (literal)
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